EP 0173605 A2 19860305 - Methods and apparatus for measuring thermal neutron decay characteristics of earth formations.
Title (en)
Methods and apparatus for measuring thermal neutron decay characteristics of earth formations.
Title (de)
Verfahren und Vorrichtung zur Bestimmung der Eigenschaften von Erdformationen mittels Messung der Abfallcharakteristik thermischer Neutronen.
Title (fr)
Procédé et dispositif pour mesurer des caractéristiques de formation géologiques par décroissance de neutrons thermiques.
Publication
Application
Priority
US 63315584 A 19840720
Abstract (en)
Methods for measuring thermal neutron decay characteristics of earth formations include the steps of irradiating an earth formation with a discrete burst of fast neutrons, detecting indications of thermal neutron concentration in the formation during a sequence of discrete time gates, determining the zeroth order moment of the indications during the sequence of discrete time gates, and determining the first order moment of the indications during the sequence of discrete time gates, in order to obtain the desired thermal neutron decay characteristic of the earth formation.
IPC 1-7
IPC 8 full level
G01V 5/10 (2006.01)
CPC (source: EP US)
G01V 5/105 (2013.01 - EP US); G01V 5/107 (2013.01 - EP US)
Designated contracting state (EPC)
AT DE FR GB IT NL
DOCDB simple family (publication)
EP 0173605 A2 19860305; EP 0173605 A3 19901205; US 4600838 A 19860715
DOCDB simple family (application)
EP 85401475 A 19850718; US 63315584 A 19840720